ESR study of light-induced valence tautomerism of a dinuclear Co complex

Yoshio Teki; Mugen Shirokoshi; Shinji Kanegawa; Osamu Sato

doi:10.1002/ejic.201100467

ESR study of light-induced valence tautomerism of a dinuclear Co complex

Yoshio Teki, Mugen Shirokoshi, Shinji Kanegawa, Osamu Sato

Department of Fundamental Organic Chemistry

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Light-induced valence tautomerism (LIVT) of a dinuclear complex, [{Co(dpqa)}₂(dhbq)](PF₆)₃ (1), was investigated by ESR analysis of dhbq^3-. LIVT phenomena were observed in the sample diluted in the glass matrix as well as that in powder form. The signal decay and the relaxation were analyzed by double exponential fitting; the results suggest a two-step mechanism. Quantum mechanical tunneling was clearly observed in the glass matrix. Light-induced valence tautomerism (LIVT) of a dinuclear complex, [{Co(dpqa)}₂(dhbq)](PF₆)₃ (1), was investigated by ESR analysis of dhbq^3-. LIVT phenomena were observed in the glass matrix as well as in the powder sample. The signal decay and the relaxation, analyzed by double exponential fitting, suggest a two-step mechanism. Quantum tunneling phenomena were clearly observed in the glass matrix.

Original language	English
Pages (from-to)	3761-3767
Number of pages	7
Journal	European Journal of Inorganic Chemistry
Issue number	25
DOIs	https://doi.org/10.1002/ejic.201100467
Publication status	Published - Sep 2011

All Science Journal Classification (ASJC) codes

Inorganic Chemistry

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title = "ESR study of light-induced valence tautomerism of a dinuclear Co complex",

abstract = "Light-induced valence tautomerism (LIVT) of a dinuclear complex, [{Co(dpqa)}2(dhbq)](PF6)3 (1), was investigated by ESR analysis of dhbq3-. LIVT phenomena were observed in the sample diluted in the glass matrix as well as that in powder form. The signal decay and the relaxation were analyzed by double exponential fitting; the results suggest a two-step mechanism. Quantum mechanical tunneling was clearly observed in the glass matrix. Light-induced valence tautomerism (LIVT) of a dinuclear complex, [{Co(dpqa)}2(dhbq)](PF6)3 (1), was investigated by ESR analysis of dhbq3-. LIVT phenomena were observed in the glass matrix as well as in the powder sample. The signal decay and the relaxation, analyzed by double exponential fitting, suggest a two-step mechanism. Quantum tunneling phenomena were clearly observed in the glass matrix.",

author = "Yoshio Teki and Mugen Shirokoshi and Shinji Kanegawa and Osamu Sato",

year = "2011",

month = sep,

doi = "10.1002/ejic.201100467",

language = "English",

pages = "3761--3767",

journal = "Chemische Berichte",

issn = "0009-2940",

publisher = "Wiley-VCH Verlag",

number = "25",

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T1 - ESR study of light-induced valence tautomerism of a dinuclear Co complex

AU - Teki, Yoshio

AU - Shirokoshi, Mugen

AU - Kanegawa, Shinji

AU - Sato, Osamu

PY - 2011/9

Y1 - 2011/9

N2 - Light-induced valence tautomerism (LIVT) of a dinuclear complex, [{Co(dpqa)}2(dhbq)](PF6)3 (1), was investigated by ESR analysis of dhbq3-. LIVT phenomena were observed in the sample diluted in the glass matrix as well as that in powder form. The signal decay and the relaxation were analyzed by double exponential fitting; the results suggest a two-step mechanism. Quantum mechanical tunneling was clearly observed in the glass matrix. Light-induced valence tautomerism (LIVT) of a dinuclear complex, [{Co(dpqa)}2(dhbq)](PF6)3 (1), was investigated by ESR analysis of dhbq3-. LIVT phenomena were observed in the glass matrix as well as in the powder sample. The signal decay and the relaxation, analyzed by double exponential fitting, suggest a two-step mechanism. Quantum tunneling phenomena were clearly observed in the glass matrix.

AB - Light-induced valence tautomerism (LIVT) of a dinuclear complex, [{Co(dpqa)}2(dhbq)](PF6)3 (1), was investigated by ESR analysis of dhbq3-. LIVT phenomena were observed in the sample diluted in the glass matrix as well as that in powder form. The signal decay and the relaxation were analyzed by double exponential fitting; the results suggest a two-step mechanism. Quantum mechanical tunneling was clearly observed in the glass matrix. Light-induced valence tautomerism (LIVT) of a dinuclear complex, [{Co(dpqa)}2(dhbq)](PF6)3 (1), was investigated by ESR analysis of dhbq3-. LIVT phenomena were observed in the glass matrix as well as in the powder sample. The signal decay and the relaxation, analyzed by double exponential fitting, suggest a two-step mechanism. Quantum tunneling phenomena were clearly observed in the glass matrix.

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